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timselectric
If I can do it, you can do it.
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There's nothing wrong with soldered connections as long as they are good clean connections.
(Everything on every circuit board is soldered)
And the 7 AWG silicone insulated conductors are more than capable of handling 100a each, at that short length.
(Everything on every circuit board is soldered)
And the 7 AWG silicone insulated conductors are more than capable of handling 100a each, at that short length.
wpns
Solar Joules are catch and release
Not the best soldering job I’ve ever seen, and not the worst either.
I would not have left it like that, but I am not a worker in a Chinese factory making a dollar a day and turning out 1000 of these in a work shift.
7awg wire appears to have an ampacity of about 65A so again, functional.
This is the DIY forum, see if there’s any difference if you swap those out for a single 1awg wire or something like #2 or #4 welding cable.
I would not have left it like that, but I am not a worker in a Chinese factory making a dollar a day and turning out 1000 of these in a work shift.
7awg wire appears to have an ampacity of about 65A so again, functional.
This is the DIY forum, see if there’s any difference if you swap those out for a single 1awg wire or something like #2 or #4 welding cable.
Depends on how you mount it, etc. I just go to a combiner bus bar with the two leads, and go with bigger wire where I have to go from there.
Depends on your use case and situation. I have 7 of these running now, two of them for 5 years, without issues.
wpns
Solar Joules are catch and release
Why not solder the bigger wire directly to the board?
timselectric
If I can do it, you can do it.
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Shrink tubing is fine. But you should either cut that bolt shorter or replace it with a shorter one first.
timselectric
If I can do it, you can do it.
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I didn't extend my leads. I planned for the BMS to be next to the battery negative and the breaker to be next to the BMS.
Steve_S
Offgrid Cabineer, N.E. Ontario, Canada
Hello...
As far as I know, at this time no one from JK is active on this site. I also think that Nami from Hankzor (one of the suppliers) has abandoned this ship.
Regarding the soldering, I have seen far worse, that isn't so bad and BTW, soldering something like that IS a PITA ! The Super-Fine Silicone Wire is capable of handling the loads and I fully agree those wires should have been longer to start with. The photo you posted, I have quite a few out there that I did like that and no issues at all. That includes 150A & 200A models. Now I used Silicone Jacketed wire in my extensions not regular fine wire copper welding wire.
- ! NB: The New Inverter Model JK does not come with soldered wires. Some vendors are providing good Silicone Jacketed wires to go with them.
One of our members has posted photo's of how he's setup this new steel cases with Class-T Fuses, @S Davis starts showing that here: https://diysolarforum.com/threads/luyuan-battery-case.44827/post-1058887
As far as I know, at this time no one from JK is active on this site. I also think that Nami from Hankzor (one of the suppliers) has abandoned this ship.
Regarding the soldering, I have seen far worse, that isn't so bad and BTW, soldering something like that IS a PITA ! The Super-Fine Silicone Wire is capable of handling the loads and I fully agree those wires should have been longer to start with. The photo you posted, I have quite a few out there that I did like that and no issues at all. That includes 150A & 200A models. Now I used Silicone Jacketed wire in my extensions not regular fine wire copper welding wire.
- ! NB: The New Inverter Model JK does not come with soldered wires. Some vendors are providing good Silicone Jacketed wires to go with them.
One of our members has posted photo's of how he's setup this new steel cases with Class-T Fuses, @S Davis starts showing that here: https://diysolarforum.com/threads/luyuan-battery-case.44827/post-1058887
No, I just cut off a piece of copper bar and drilled three holes. Crimped on the lugs/ring terminals which I got at the local hardware store.
Some delays with DIY are inevitable, especially when you start out. I was (as far as I know) the first person on this forum to even try the JK BMS, and even opened it up to make sure the MOSFETs were properly sized etc. This is part of the fun of DIY.
From cable to lug/ring terminal, yes. On the PCB, soldering is just fine.
timselectric
If I can do it, you can do it.
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Soldered connection is better than crimped. But if both connections are properly made, the difference isn't enough to matter.
The only variable is vibration.
Soldered is not recommended in a high vibration situation.
The only variable is vibration.
Soldered is not recommended in a high vibration situation.
Partimewages
Solar Addict
This is incorrect thinking. If you have no qualifications you need to retract your statement.
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